4.See a cellphone cover that you like on Taobao?Forget about placing an order,paying the bill online and waiting for days for it to be delivered to you.In the near future,you'll be able to get it in minutes just by hitting"print"on your computer.You might find it hard to believe that you could actually"print"an object like you would a picture.But it is not that hard to understand how it would work.Just as a traditional printer sprays (噴) ink onto paper line by line,modern 3D printers spread material onto a surface layer by layer,from the bottom to the top,gradually building up a shape.Instead of ink,the materials the 3D printer uses are mainly plastic,resin(樹脂) and certain metals.The thinner each layer is-from a millimetre to less than the width of a hair-the smoother and finer the object will be.This may sound like a completely new technology,but the truth is that 3D printing has been around since the late 1980s.Back then,it was barely affordable for most people,so few knew about it.Last year,though,saw a big change in the 3D printing industry-printers became much cheaper.For example,10years ago a desktop 3D printer might have cost£20,000,while now they cost only about£1,000,according to the BBC.Taken out of the factory and introduced to more diverse and common uses,3D printing can create just about anything you can think of-flutes (笛子),bikinis,jewelry,aircraft parts and even human organs.In fact,scientists from Cornell University in New York have just made an artificial ear using a 3D printer,according to Science Daily.The fake ear looks and acts exactly like a natural one.However,as 3D printing becomes more common,it may bring about certain problems-such as piracy."Once you can download a coffee maker,or print out a new set of kitchen utensils (餐具) on your personal 3D printer,who will visit a retail store again?"an expert in 3D printing told Forbes News.Even more frightening,what if anyone in the world could use a 3D printer to print out a fully functioning gun?
9.According to the article,in the future,the 3D printing technology willB.
A.enable people to make better purchases online  
B.change the way we make many products  
C.be applied as widely in our daily life as computers  
D.shorten the time it takes for people to get what they buy online
10.What happened in the 3D printing industry last year?D
A.The 3D printing technology was taken out of the factory.
B.The 3D printing technology began to be used in various fields.
C.The 3D printer was used for medical treatment for the first time.
D.The 3D printer became more affordable for consumers.
11.How is the last paragraph developed?A
A.By giving examples.
B.By making comparisons.
C.By analyzing the cause and effect.
D.By presenting research findings.
12.What is the best title of the passage?D
A.Great Demand for 3D Printers  
B.Technology in the Future 
C.Online Shopping Disappearing  
D.Printing out Everything.

分析 本文主要講述的就是3D打印機(jī)在未來的廣泛使用,能夠改變很多做事的方式方法.

解答 9.B 細(xì)節(jié)理解題.根據(jù)文章1,2段Just as a traditional printer sprays (噴) ink onto paper line by line,modern 3-D printersspread material onto a surface layer by layer,from the bottom to the top,gradually building up a shape.說明未來的3-D打印機(jī)會(huì)改變我們生產(chǎn)很多產(chǎn)品的方式,故B正確.
10.D 細(xì)節(jié)理解題.根據(jù)文章第五段Last year,though,saw a big change in the 3-D printing industry---printers became muchcheaper.For example,10 years ago a desktop 3-D printer might have cost£20,000 (200,000 yuan),while now they cost only about£1,000,according tothe BBC.說明去年3D打印機(jī)變得很便宜了,故D正確.
11.A 篇章結(jié)構(gòu)題.根據(jù)最后一段such as piracy和an expert in 3-D printing told Forbes News.說明在本段中使用了舉例說明的方法來組織這個(gè)段落.故A正確.
12.D 主旨大意題.本文主要講述的就是3D打印機(jī)在未來的廣泛使用,能夠改變很多做事的方式方法.故D正確.

點(diǎn)評(píng) 本文是一個(gè)科教類閱讀理解,題目涉及多道細(xì)節(jié)理解題,做題時(shí)結(jié)合原文和題目有針對(duì)性的找出相關(guān)語句進(jìn)行仔細(xì)分析,結(jié)合選項(xiàng)選出正確答案.推理判斷題也是要在抓住關(guān)鍵句子的基礎(chǔ)上合理的分析才能得出正確答案,切忌胡亂猜測(cè),一定要做到有理有據(jù).

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